Purpose: The purpose of this was to determine the concentration of sodium carbonate in an unknown sample by titration. The solution of hydrochloric acid was prepared and standardized using Na2CO3. Observations: Week 1: Standardizing hydrochloric acid using sodium carbonate with bromocresol green indicator Table 1: Titration of sodium carbonate using hydrochloric acid Trial | Mass of Na2CO3 (g) | Burette Reading (mL) | Final Volume of HCl (mL) | | | Initial | Final | | 1
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Goals The main goal of this project is to learn how to identify the properties of an unknown ionic compound. In order to do this successfully the group has to use a variety of methods and run several tests on the unknown compound. By doing this the group will be able to identify the different chemical and physical properties of the compound that will help obtain the identity of the specific compound given. The group will devise two syntheses of the compound‚ and compare them for cost effectiveness
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and Report: Introduction: The experiment was conducted to find the unknown molarity of HCL. The unknown molarity of HCL was found by the use of the titration method and then comparing the results between the titrant and analyte HCL solutions. Molarity is a concentration unit‚ it is defined by the number of moles the total volume of the solution. This experiment included a process called titration‚ used to work out the unknown concentration of a known substance. The process of titration is adding
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← A Passage To Africa. (Narrative Article‚ Literary Analysis.) Poetry Analysis: An Unknown Girl- Moniza Alvi. 28May In the evening bazaar Studded with neon An unknown girl Is hennaing my hand She squeezes a wet brown line Form a nozzle She is icing my hand‚ Which she steadies with her On her satin peach knee. In the evening bazaar For a few rupees An unknown girl is hennaing my hand As a little air catches My shadow stitched kameez A peacock spreads its lines Across my palm.
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The Tomb of the Unknown Soldier is a practice utilized throughout the world to memorialize soldiers who have died in modern wars without being identified. The first monument of this kind was the Tomb of Unknown Soldiers in Frederica‚ Denmark (1858)‚ which memorialized unknown soldiers who died in the First War of Schleswig. Another such Tomb of the Unknown Soldier is found in Philadelphia‚ Pennsylvania and was erected in 1866 to honor those soldiers who died during the American Civil War. The history
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Purpose: To identify an unknown bacterial specimen using basic laboratory technique and biochemical tests. The unknown bacteria will be one of the following: Enterococcus faecalis‚ Staphylococcus saprophyticus‚ Escherichia coli‚ Enterobacter aerogenes‚ Proteus vulgaris‚ Salmonella [I assume typhimurium]‚ or Shigella [either flexneri or sonnei‚ we used both in our lab during the semester]. Procedure {and observations}: Observe bacterial colony morphology. {Colonies are large‚ beige or
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2.1 Sanitation Methods There are Four Methods that conducted on the laboratories in order to detect the presence of microorganisms. There are Rodac Method‚ Swab Method‚ Rinse Method‚ and lastly Open Dish Method and it will be discussed in detail below. 2.1.1 Rodac Method The purpose of this Standard Operating Procedure is to describe a program that will adequately measure the efficacy of disinfection of Rooms and equipment in each laboratory‚ RODAC plates can detect the presence or absence of
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UNIT 5 Unknown Language Journal: Arabic Contents 1 Lesson Objectives (Functional‚ Grammatical & Lexical) Lesson 1 Lesson 2 Lesson 3 2 Teaching Methods and Techniques Class Management Interactive Patterns & Activities Use of Materials 3 Contrastive Analysis 4 Summary Lesson Objectives: (3 lessons – 90 mins.) Lesson 1 The aim of this first class was to provide a very general introduction to the Arabic language‚ how it is written‚ how it is pronounced‚ and
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identify a metal‚ each with varying amounts of accuracy. In order to test some of these methods‚ thermal expansion‚ density‚ and specific heat were used to identify two small metal rods. The overall purpose of this experiment was to identify an unknown metal using the three previously stated properties. This means that the percent error should be relatively low‚ meaning that there would be little difference between the values measured in our experiment and the true values of the metal. Density
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and women under pressure to fit the image of perfection‚ yet when a person does achieve this so called perfection‚ others ridicule them for succumbing to peer pressure. In “The Unknown Citizen” by W. H. Auden‚ the speaker‚ a government bureaucrat‚ also takes on this two-faced attitude towards a man identified as the unknown citizen. At first glance‚ this poem seems like the well-deserved tribute to a man who lived the perfect life‚ but after a more detailed analysis‚ the speaker reveals his attitude
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